diff --git a/platform/wiced/btstack_stdin_wiced.c b/platform/wiced/btstack_stdin_wiced.c
index c3ae67eb7..94fe63dcb 100644
--- a/platform/wiced/btstack_stdin_wiced.c
+++ b/platform/wiced/btstack_stdin_wiced.c
@@ -56,11 +56,14 @@ static wiced_result_t stdin_reader_notify(void * p){
     return WICED_SUCCESS;
 }
 
+static btstack_context_callback_registration_t callback_registration;
 static void stdin_reader_thread_process(wiced_thread_arg_t p){
     UNUSED(p);
+    callback_registration.callback = &callback_registration;
     while (true){
         uint8_t c = getchar();
-        btstack_run_loop_wiced_execute_code_on_main_thread(&stdin_reader_notify, (void *)(uintptr_t) c);
+        callback_registration.context =  (void *)(uintptr_t) c;
+        btstack_run_loop_execute_code_on_main_thread(&callback_registration);
     }
 }
 
diff --git a/platform/wiced/btstack_uart_block_wiced.c b/platform/wiced/btstack_uart_block_wiced.c
index 0b731d70b..392664f0e 100644
--- a/platform/wiced/btstack_uart_block_wiced.c
+++ b/platform/wiced/btstack_uart_block_wiced.c
@@ -117,6 +117,7 @@ static wiced_result_t btstack_uart_block_wiced_main_notify_block_read(void *arg)
 }
 
 // executed on tx worker thread
+static btstack_context_callback_registration_t block_send_callback_registration;
 static wiced_result_t btstack_uart_block_wiced_tx_worker_send_block(void * arg){
     // wait for CTS to become low in manual flow control mode
     if (btstack_flow_control_mode == BTSTACK_FLOW_CONTROL_MANUAL && wiced_bt_uart_pins[WICED_BT_PIN_UART_CTS]){
@@ -129,11 +130,13 @@ static wiced_result_t btstack_uart_block_wiced_tx_worker_send_block(void * arg){
     platform_uart_transmit_bytes(wiced_bt_uart_driver, tx_worker_data_buffer, tx_worker_data_size);
 
     // let transport know
-    btstack_run_loop_wiced_execute_code_on_main_thread(&btstack_uart_block_wiced_main_notify_block_send, NULL);
+    block_send_callback_registration.callback = &btstack_uart_block_wiced_main_notify_block_send;
+    btstack_run_loop_execute_code_on_main_thread(&block_send_callback_registration);
     return WICED_SUCCESS;
 }
 
 // executed on rx worker thread
+static btstack_context_callback_registration_t block_received_callback_registration;
 static wiced_result_t btstack_uart_block_wiced_rx_worker_receive_block(void * arg){
 
     if (btstack_flow_control_mode == BTSTACK_FLOW_CONTROL_MANUAL && wiced_bt_uart_pins[WICED_BT_PIN_UART_CTS]){
@@ -155,7 +158,8 @@ static wiced_result_t btstack_uart_block_wiced_rx_worker_receive_block(void * ar
     }
 
     // let transport know
-    btstack_run_loop_wiced_execute_code_on_main_thread(&btstack_uart_block_wiced_main_notify_block_read, NULL);
+    block_received_callback_registration.callback = &btstack_uart_block_wiced_main_notify_block_read;
+    btstack_run_loop_execute_code_on_main_thread(&block_received_callback_registration);
     return WICED_SUCCESS;
 }